Insulating-floor.



Patented June 12, 1917 Jn m N'Q AQ:

A. G. BROWN.

INSULATING FLOOR.

APPLICATION man APR.11,1914.

L AOW ALFRED G. BROWN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR T0 UNION FIBRE COM- P, 0F WINNA, MINNESOTA, A CORPORTlON 0F MINNESTA.

INSULATING-FLOOR.

maaier.,

Specification of Letters Patent.

Patented June t2, limit..

Application filed April 17, 1914. Serial No. 832,506.

To cZZ whom it may concern.

Be it known that I, ALFRED G. BROWN, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful 4improvements in Insulating- Floors, of which the following is a specification.

My invention relates to improvements in insulatin doors intended particularly for use in rerigerator cars.

rllhe problem of floor insulation for refrigerator cars involves the provision of two essential requirements: heat insulation and waterproong. rlhe insulation must be such as to prevent the interior of the car from becoming heated from the outside, and the waterproofing must be such as to prevent the water which collects upon the car Hoor from the melting of the ice and other causes from wetting, rotting and spoiling the heat insulation and the side sills and other timbers which support the car ooring. lt has been` customary heretofore to use a fibrous heat insulation, such as linofelt, hair felt, and the like, which is not in itself waterproof, and to cover this insulation with waterproof compounds and sheets of various sorts, which do not themselves have heat insulating properties.

It is the object of this invention to simplify the construction of waterproof insulating floors for refrigerator cars, by the use of an insulating ller which is in itself waterproof, the filler having such other qualities and characteristics that the .construction is not only simplied'but provides an insulation whose eiectiveness vis equal to, if not greater than, that of any insulating construction .for oors knownto me. In carrying out my invention, l preferably make use of the material .well known in the proof lith'being a material composed of mineral wool and vegetable fibers intermediv waterproofed material is commercially proart as waterproof lith, the said waterately intermingled and waterproofed. This sults, since the material has no capillary attraction. Ylhe sheets are readily sawed, or

otherwise cut and fitted, the inherent resilifeet of the car-braces to the extent that l when the car is subjected to severe bumping strains, the rotten sills give way so that the whole superstructure becomes thereby necessitating the practical rebuildlng of cars. By the construction hereinafter described, the sills are protected in an effective and economical manner, all but one of the false floors necessitated in `high grade loosened,

refrigerator car constructions now in use being eliminated, and the insulating construc- `tion intertting with the side-sills in a manner which wholly protects the latter from contact with the moisture which may reach the refrigerator car licor.

With these objects in view my invention consists in the construction, combination and arrangement of parts hereinafter described and claimed.

In the accompanying drawings showing an embodiment of the invention.'

Figure l is a vertical cross section through the car floor and part of the side walls of thei car, with the invention applied thereto; an

Fig. 2 is a cross sectionfon an enlarged scale of a fragment of the floor and one of the side walls.

ln the drawings 2 represents the side sills and 3 the intermediate sills: arranged at spaced intervalsbetween the outer sills. 4c represents a false flooring supported partly upon the sills 3 and partly upon cleats 5 yupon the .inner sides of the outer sills. Upon the false flooring is preferably, but not necessarily, vlaldwaterproof paper 6. Upon this ooring, or upon the waterproof paper placed' thereon, are secured sub-sills 7 in position to overlie and aline with the sills 3. The outer sills 2, which extend u beyond the finished floor 8, are cutaway on their innersides to form shoulders 9 of the same height above the false flooring as the subthe sub-sills and outer sills than in the intervening spaces, so that most of the weight of the nished floor 8 will be carried on the sub-sills and outer sills. Next the ,entire surface of the lith is preferably Hooded with a suitable waterproof cement or coating 12, and the nished floor 8 laid thereon.

llt will be observed that the outer portions of the side sills extend up above the top of the finished floor line, and that the floor 8 does not extend quite to thisupwardly projecting portion 13, so a space is left to be filled in with `waterproof cement 14, whereby the joint between the floor and the outer sill will be efiectually sealed.

. rlFhe side wall of the car may be insulated "in any desired Way, but, to safeguard the floor construction, one or more sheets 15 of lith are preferably used around the sides and ends of the car next to the floor, and cemented to the same by means of a suitable waterproof material.

Waterproof lith is particularly well adapted for the floor insulation on account of the ease with which the sheets of lith can by sawed and fitted around the frame and uprights. It may be added that it is the ob` ject of the present invention, not only to construct the heat insulation itself of water'- proof lith or' other fibrous waterproof material, but to simplify and improve the whole construction of the insulating fioors for refrigerator cars, which is made possible by the use of such material.

l claim as my invention:

1. An insulating floor for refrigerator cars comprising in combination, side sills having y bearing surfaces, sills arranged at intervals between said side sills and having bearing surfaces alined with the bearing surfaces of said side sills, sheets of waterproofed heat insulating material cut and fitted to the spaces between all of said sills including the side sills, sections of said insulating material also fitted upon and covering the bearing surfaces upon said sills and j ointing with the material between said sills, and a finish fioor laid upon said insulating material.

' 2. An insulating -fioor for refrigerator having bearing surfaces, a false flooring carried `,by said side-sills', sub-sills car-ried by said jfalse floor and having bearing surfaces nazaten? alined with the bearing surfaces of said side-sills, an insulating material fitted between said sub-sills, and said sub-sills and side-sills, sections of said insulating material also fitted upon said bearing surfaces, and jointing with the material betweenthe sills and a finish fioor laid upon said insulating material.

3. An insulating floor for refrigerator i cars, comprising in combination, side-sills,

sub-sills laid between said side-sills, a false flooring carried by said side-sills and having said sub-sills laid thereupon,an insulating material cut and fitted to the spaces between.

said sub-sills, sections of said insulating materiaLalso cut and fitted to provide insulated seats on said sub-sills and side-sills, a layer of water proong material owed over all of said insulating material and a' finish floor laid over said layer of waterproofing material and having its weight distributtd over said sections.

4;. An insulating`floor for refrigerator cars, comprising in combination, side-sills, sub-sills between said side-sills, a false flooring supported by said side-sills and carrying said sub-sills, an insulating material eut and fitted to the spaces between said subsills, sections of said insulating material also cut and fitted on said side-sills and subsills and providing bearing surfaces above the level of. the first mentioned insulating material and a finish floor laid upon said bearing surfaces.

5. An insulating floor for refrigerator cars, comprising in combination, side-sills, sub-sills between said side-sills, recessed vshoulders provided on said side-sills and forming bearing 'surfaces in alinelnent with the 'upper surfaces of said sub-sills, an 1nsulating-sheet material vcut and fitted to the spaces between the sills, sections of said insulating material also cut and fitted to said bearing surfaces and the upper surfaces of said sub-sills, a ooring laid over the insulating material on said sub-sills and said recessed shoulders, the insulating material thereon and said ooring forming an insulating joint with the side construction of the car.

6. An insulating floor for refrigerator 'cars comprising in combination, side sills,

sills arranged at intervals between said side sills, sheets of waterproofed heat insulating material cut'and tted to they spaces between all of said sills, including the `side sills, sections of said insulating material also cut 'and fitted upon said sills and providing bearing surfaces above the level of the insulating material between the sills, and a finish floor l l laid upon said bearing surfaces.y cars, comprising 1n combination, side-sills ders forming bearing surfaces in alinement with the-upper surfaces of said, intervening sills, sheeted, Waterproofed, heat insulating material cut and fitted to the spaces between all said sills including the side sills7 sections of said insulatin material also out and fitted to said bearing surfaces upon the side sills and the upper surfaces of the other sills, and coverin thel same, a flooring laid over l0 said insulating material on said sills and recessed shoulders, said flooring and the insulating material upon said recessed shoulders forming an insulating joint with the side construction of the car.

ln testimony whereof I aiX my signature 15 in presence of two Witnesses. .f

ALFRED Gr. BROWN. Witnesses: A

ARTHUR P. LOTHROP, H. SWANSON. 

